Whatever light level I could see bright specks. Two appeared on the first evening, two on the next day. With light on I could see one clearly and the rest when I tilted the screen. I don't want to wait until it is full of them. No photos on account that the thing is now sealed in the box and I go to post office today. I am within 14 days of possible return with no costs so it has to go. Pity really, I like Bookeen.